[i]The F-15SA is the second version (after Singapore) to be delivered with the APG-63(V)3 active, electronically scanned array (AESA) radar. It is the first to have BAE Systems’ digital electronic warfare system (DEWS), .....Like the Singaporean aircraft, it has a Lockheed Martin AAS-42 infrared search-and-track system, known as Tiger­Eye on the F-15.

The Saudi variant is the first all-fly-by-wire F-15, which is expected to reduce maintenance requirements because the controls are self-rigging. It has a so-called PDM-free wing that does not require periodic depot maintenance on its structure. Another change is that the wing stores stations Nos. 1 and 9 are activated, mainly in order to carry a larger air-to-air load in conjunction with air-to-surface weapons. The Saudi order includes AGM-88B High-Speed Antiradiation Missiles from U.S. stocks.[i]

Are these F-15s better than any in the US inventory? Certainly they are the 1st all fly by wire ones. Though I am not sure that helps in combat.

Quoting tommytoyz (Thread starter):Are these F-15s better than any in the US inventory? Certainly they are the 1st all fly by wire ones. Though I am not sure that helps in combat.

Well, it certainly should be better than any F-15 the USAF has. Life cycle costs go down with the PDM-free wing and the FBW FCS should reduce the line maintenance requirements before any mission. The AESA helps a lot as well.

Weren't the USAF F-15s upgraded with new AESA radars? I think they were. But I am not sure if they are of the latest and greatest versions or up to the Saudi version.

The Saudi order includes AGM-88B High-Speed Antiradiation Missiles from U.S. stocks. That's one thing the USAF F-15's don't carry. The F-16s do the Wild Weasel radar suppression work for the USAF.
This enables them to suppress Radars and carry bombs to target at the same time.

USAF F-15s also don't have anything like the AN/AAS-42 Infra-Red Search-and-Track (IRST) system. Or am I wrong? It's similar to the fact that the most advanced F-16s (Block 60) are not flown by the USAF.